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Cheap flights from Sofia to Istanbul Airport from £55

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/4. Fares are subject to change and may not be available on all flights or dates of travel.
SOF — IST
27 Feb — 6 Mar1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Sofia to Istanbul

Enter your travel dates to find the best prices.

Cheapest flights from Sofia to Istanbul
Explore the most affordable flight options available from Sofia to Istanbul. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 28 January 2026.

Fri 24/415:50
SOF
-
IST
Nonstop1h 30m
Turkish Airlines
Sun 26/412:00
IST
-
SOF
Nonstop1h 15m
Turkish Airlines
Deal found 27/1£104
Wed 11/306:00
SOF
-
IST
1 stop14h 05m
Multiple Airlines
Wed 18/314:35
IST
-
SOF
1 stop9h 55m
Multiple Airlines
Deal found 25/1£114
Fri 13/306:00
SOF
-
IST
1 stop14h 05m
Multiple Airlines
Fri 20/314:50
IST
-
SOF
Nonstop1h 20m
Multiple Airlines
Deal found 27/1£124
Fri 24/420:20
SOF
-
IST
1 stop12h 10m
Multiple Airlines
Sun 26/412:00
IST
-
SOF
Nonstop1h 15m
Multiple Airlines
Deal found 27/1£127
Fri 13/321:40
SOF
-
IST
Nonstop1h 35m
Turkish Airlines
Fri 20/314:50
IST
-
SOF
Nonstop1h 20m
Turkish Airlines
Deal found 27/1£139
Sat 2/509:35
SOF
-
IST
Nonstop1h 30m
Turkish Airlines
Wed 6/518:55
IST
-
SOF
Nonstop1h 20m
Turkish Airlines
Deal found 27/1£141
Thu 17/916:05
SOF
-
IST
1 stop11h 35m
Air Serbia
Fri 25/915:45
IST
-
SOF
1 stop23h 50m
Air Serbia
Deal found 25/1£151
Fri 24/419:25
SOF
-
IST
1 stop6h 40m
Lufthansa
Sat 25/403:45
IST
-
SOF
1 stop8h 25m
Lufthansa
Deal found 27/1£153
Wed 11/316:00
SOF
-
IST
Nonstop1h 30m
Turkish Airlines
Wed 18/314:50
IST
-
SOF
Nonstop1h 20m
Turkish Airlines
Deal found 25/1£159
Fri 10/719:45
SOF
-
IST
1 stop15h 05m
TAROM
Wed 22/711:40
IST
-
SOF
1 stop7h 35m
TAROM
Deal found 25/1£167
Tue 14/710:05
SOF
-
IST
1 stop13h 20m
TAROM
Wed 15/711:40
IST
-
SOF
1 stop7h 35m
TAROM
Deal found 25/1£167

Find flight deals from Sofia to Istanbul

Discover tips and strategies to find the most affordable flight options for your journey from Sofia (SOF) to Istanbul (IST). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 28 January 2026.

Round-trip from

£104

One-way from

£55

Popular in

April

Cheapest in

June

Average price

£90

Good round-trip deal

£712 or less

Good one-way deal

£142 or less
Turkish Airlines
  • Turkish Airlines
  • 24/4-26/4
  • Nonstop
  • 2h 45m total
  • Sofia to Istanbul
Search Deals
Turkish Airlines
  • Turkish Airlines
  • 3/4
  • Nonstop
  • 1h 30m total
  • Sofia to Istanbul
Search Deals
Highest demand for flights based on searches. 1% potential increase in price (£1 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£2 potential savings vs. average return price).
Search Deals
Average for round-trip flights in January 2026
Search Deals
Price to beat on a round-trip flight from Sofia to Istanbul.
Search Deals
Price to beat on a one-way flight from Sofia to Istanbul.
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Sofia to Istanbul that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 28 January 2026.
Use the filters below to find and compare flights from Sofia to Istanbul Airport that are best for you.

Fly from

Sofia

Fly to

Istanbul

Route

Depart

Return

Price

SofiaIstanbul

SOF - IST

SOFIST

Sofia

Fri 24/4

15:50-17:20

Nonstop1h 30m

Istanbul

Sun 26/4

12:00-13:15

Nonstop1h 15m

£104

SofiaIstanbul

SOF - IST

SOFIST

Sofia

Fri 13/3

06:00-21:05

1 stop14h 05m

Istanbul

Fri 20/3

14:50-15:10

Nonstop1h 20m

£124

SofiaIstanbul

SOF - IST

SOFIST

Sofia

Fri 13/3

21:40-00:15

Nonstop1h 35m

Istanbul

Fri 20/3

14:50-15:10

Nonstop1h 20m

£139

SofiaIstanbul

SOF - IST

SOFIST

Sofia

Sat 2/5

09:35-11:05

Nonstop1h 30m

Istanbul

Wed 6/5

18:55-20:15

Nonstop1h 20m

£141

SofiaIstanbul

SOF - IST

SOFIST

Sofia

Thu 12/3

16:00-04:10

1 stop11h 10m

Istanbul

Sun 15/3

16:40-03:05

1 stop11h 25m

£151

SofiaIstanbul

SOF - IST

SOFIST

Sofia

Sat 2/5

16:05-03:40

1 stop11h 35m

Istanbul

Wed 6/5

15:45-03:00

1 stop11h 15m

£151

SofiaIstanbul

SOF - IST

SOFIST

Sofia

Sat 21/2

16:00-15:55

1 stop22h 55m

Istanbul

Mon 23/2

16:40-15:30

1 stop23h 50m

£151

SofiaIstanbul

SOF - IST

SOFIST

Sofia

Sat 28/2

16:00-15:55

1 stop22h 55m

Istanbul

Fri 6/3

05:20-15:30

1 stop11h 10m

£151

SofiaIstanbul

SOF - IST

SOFIST

Sofia

Fri 3/4

14:05-15:35

Nonstop1h 30m

£55

SofiaIstanbul

SOF - IST

SOFIST

Sofia

Mon 1/6

16:05-15:55

1 stop23h 50m

£73

Flights are sorted by cheapest return flights first.

Deals found on 25/1

Showing 1-10 of 18 results
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2

Best time to book a flight from Sofia to Istanbul

Have a flexible travel schedule? Discover the best time to fly to Istanbul from Sofia with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Sofia to Istanbul Airport

How far ahead should I book a flight from Sofia to Istanbul Airport?

Use this chart to determine the optimal time to book a return flight from Sofia to Istanbul. Price data was last updated on 23 January 2026.

Booking 31 days in advance of your planned departure date is, on average, the best time to get cheap flights from Sofia to Istanbul Airport. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Sofia to Istanbul Airport?

Currently, October is the cheapest month in which you can book a flight from Sofia to Istanbul Airport (average of £54). Flying from Sofia to Istanbul Airport in May is currently the most expensive (average of £74). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from SOF to IST?

Find hourly flight availability from Sofia to Istanbul. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 28 January 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Sofia to Istanbul Airport as you normally would.

How much does it cost for a return flight from Sofia to Istanbul Airport?

Reviews of airlines servicing Istanbul

Get insights into the airlines that provide service to Istanbul. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Istanbul. Reviews last updated 28 January 2026.
See what other customers who have flown with Turkish Airlines and Pegasus Airlines from Sofia to Istanbul Airport have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Turkish Airlines
7.3
Good
4,209 reviews
Check prices

Overall

7.3

Comfort

7.3

Crew

7.8

Food

7.4

Boarding

7.3

Entertainment

7.4

Reviews

1 / 20
6.0
Good

Anonymous,Jan 2026

NQZ - IST

First of all, my flight got delayed. When I had a registration in Astana, the girl who was working on a desk was too lazy to fill out my info and that’s why she gave me only 2 tickets instead of 3. While boarding I realized it and had to talk to another worker who was solving this problem. My seat was near emergency door, people in front were reclining their seats, but I couldn’t- that made me have a little space to sit, move, etc. That was really uncomfortable. So the flight itself also took longer and I didn’t have time to reach another gate for next flight, even tho flight attendant said plane will be in time. I had to go to Turkish Airlines main office, most of workers didn’t speak enough good English to explain properly where it is. It also took me like 1,5 hours to solve. I was not satisfied with the flight at all this time.
Turkish Airlines
7.3
Good
4,209 reviews
Turkish Airlines
7.3
Good
4,209 reviews
Check prices

Overall

7.3

Comfort

7.3

Crew

7.8

Food

7.4

Boarding

7.3

Entertainment

7.4

Reviews

1 / 20
6.0
Good

Anonymous,Jan 2026

NQZ - IST

First of all, my flight got delayed. When I had a registration in Astana, the girl who was working on a desk was too lazy to fill out my info and that’s why she gave me only 2 tickets instead of 3. While boarding I realized it and had to talk to another worker who was solving this problem. My seat was near emergency door, people in front were reclining their seats, but I couldn’t- that made me have a little space to sit, move, etc. That was really uncomfortable. So the flight itself also took longer and I didn’t have time to reach another gate for next flight, even tho flight attendant said plane will be in time. I had to go to Turkish Airlines main office, most of workers didn’t speak enough good English to explain properly where it is. It also took me like 1,5 hours to solve. I was not satisfied with the flight at all this time.
Pegasus Airlines
6.7
Okay
636 reviews
Turkish Airlines
7.3
Good
4,209 reviews
Check prices

Overall

7.3

Comfort

7.3

Crew

7.8

Food

7.4

Boarding

7.3

Entertainment

7.4

Reviews

1 / 20
6.0
Good

Anonymous,Jan 2026

NQZ - IST

First of all, my flight got delayed. When I had a registration in Astana, the girl who was working on a desk was too lazy to fill out my info and that’s why she gave me only 2 tickets instead of 3. While boarding I realized it and had to talk to another worker who was solving this problem. My seat was near emergency door, people in front were reclining their seats, but I couldn’t- that made me have a little space to sit, move, etc. That was really uncomfortable. So the flight itself also took longer and I didn’t have time to reach another gate for next flight, even tho flight attendant said plane will be in time. I had to go to Turkish Airlines main office, most of workers didn’t speak enough good English to explain properly where it is. It also took me like 1,5 hours to solve. I was not satisfied with the flight at all this time.

Related info for your journey

Find useful and relevant information for your journey from Sofia to Istanbul. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Sofia to Istanbul?

    Sofia (SOF) is the airport you will fly out of if you book a flight from Sofia to Istanbul. You should not have trouble finding flights to Istanbul from Sofia; the airport handles an average of 4 outbound flights to Istanbul per day. You should also have plenty of airline options to choose from since 2 airlines have flights from the Sofia airport to Istanbul. It is only a 4.2 mi journey to Sofia (SOF) from Sofia’s city center.

  • How long is the flight from Sofia to Istanbul Airport?

    Turkish Airlines can get you from Sofia to Istanbul Airport in just under 1h 30m. Your travel time will be generally consistent. The distance between Sofia and Istanbul Airport is about 291 mi. Most flights are nonstop.

  • What are the cheapest airlines flying from Sofia to Istanbul Airport round-trip?

    Currently priced at £63, Pegasus Airlines will fly you from Sofia to Istanbul Airport and back. In addition to Pegasus Airlines, many other airlines offer competitively priced options for your trip. Check Cheapflights for deals on Turkish Airlines for as low as £76. You may be able to fly from Sofia to Istanbul Airport for 34% less than the average price by searching for these airlines.

  • What are the most reliable airlines from Sofia to Istanbul Airport?

    The top 3 most reliable airlines when flying from Sofia to Istanbul Airport are Turkish Airlines (70%), IndiGo (70%) and Egyptair (59%).

  • What are the cheapest flights from Sofia to Istanbul Airport?

    The cheapest flight price from Sofia to Istanbul Airport is £73. On average you can expect to pay £491. The most popular route, (Sofia - Istanbul), can usually be booked for £148.

  • Can I find deals for flights from Sofia to Istanbul that include hotel bookings?

    Yes. In addition to deals on Sofia to Istanbul flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Sofia to Istanbul?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Sofia to Istanbul.

  • Can I find deals for business class flights from Sofia to Istanbul?

    Yes. Cheapflights offers flight deals from Sofia to Istanbul by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Sofia to Istanbul Airport?

    Currently, October is the cheapest month in which you can book a flight from Sofia to Istanbul Airport (average of £54). Flying from Sofia to Istanbul Airport in May is currently the most expensive (average of £74). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near Istanbul Airport?

Book flights to Istanbul Airport if you plan to visit one of these locations
Yalova

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Top 2 airlines flying from Sofia to Istanbul

Discover the top 2 airlines that operate flights from Sofia to Istanbul. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 28 January 2026.
AirlineCheapestAverageFlexibilityOn-time
Pegasus AirlinesCheapest£63Average£77FlexibilityNo cancel feeOn-time82%
Search Pegasus Airlines flights
Turkish AirlinesCheapest£76Average£138FlexibilityNo cancel feeOn-time77%
Search Turkish Airlines flights

Fly with Cheapflights

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How does Cheapflights help users find flights from Sofia to Istanbul?

Cheapflights makes it easy to find Sofia to Istanbul flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from Sofia to Istanbul?

Cheapflights simply makes it quick and affordable to book flights from Sofia to Istanbul by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from Sofia to Istanbul with no change fees?

Yes, we can. To see specific flights from Sofia to Istanbul with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from Sofia to Istanbul become cheaper?

Yes, Cheapflights offers price alerts on Sofia to Istanbul flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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